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EXPERIMENTAL AND THEORETICAL-STUDIES OF PRESSURE-DROP HYSTERESIS IN TRICKLE-BED REACTORS
Alternative TitleChem. Eng. Sci.
WANG, R; MAO, ZS; CHEN, JY
1995-07-01
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume50Issue:14Pages:2321-2328
AbstractExtensive experimental work was carried out with three different gas-liquid systems (air-water, air-water with surfactant C12H25SO3Na, air-aqueous CMC solution) and three kinds of packings (phi 2.7, 4.0 and 8.0 mm glass beads) to examine the influence of various parameters on pressure drop hysteresis. Gas and liquid Bow rates, physical properties of liquid and operation modes, influence the behavior of hysteresis in the packed reactor, and liquid flow rate is the most important factor. Hysteresis is not so pronounced for columns packed with large particles and it disappears in the pulsing flow regime. The mechanism responsible for hysteretic behavior resides in the variable uniformity of gas-liquid flow in the packed section. A parallel zone model for pressure drop in the trickling flow regime was established on the basis of experimental facts and analysis of flow structure. Theoretically predicted hysteresis loop of pressure drop is in satisfactory agreement with experimental data.; Extensive experimental work was carried out with three different gas-liquid systems (air-water, air-water with surfactant C12H25SO3Na, air-aqueous CMC solution) and three kinds of packings (phi 2.7, 4.0 and 8.0 mm glass beads) to examine the influence of various parameters on pressure drop hysteresis. Gas and liquid Bow rates, physical properties of liquid and operation modes, influence the behavior of hysteresis in the packed reactor, and liquid flow rate is the most important factor. Hysteresis is not so pronounced for columns packed with large particles and it disappears in the pulsing flow regime. The mechanism responsible for hysteretic behavior resides in the variable uniformity of gas-liquid flow in the packed section. A parallel zone model for pressure drop in the trickling flow regime was established on the basis of experimental facts and analysis of flow structure. Theoretically predicted hysteresis loop of pressure drop is in satisfactory agreement with experimental data.
KeywordPacked-beds Cocurrent Downflow Liquid Holdup Flow Hydrodynamics
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
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Indexed BySCI
Language英语
WOS KeywordPACKED-BEDS ; COCURRENT DOWNFLOW ; LIQUID HOLDUP ; FLOW ; HYDRODYNAMICS
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:A1995RJ21800013
Citation statistics
Cited Times:35[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5923
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
WANG, R,MAO, ZS,CHEN, JY. EXPERIMENTAL AND THEORETICAL-STUDIES OF PRESSURE-DROP HYSTERESIS IN TRICKLE-BED REACTORS[J]. CHEMICAL ENGINEERING SCIENCE,1995,50(14):2321-2328.
APA WANG, R,MAO, ZS,&CHEN, JY.(1995).EXPERIMENTAL AND THEORETICAL-STUDIES OF PRESSURE-DROP HYSTERESIS IN TRICKLE-BED REACTORS.CHEMICAL ENGINEERING SCIENCE,50(14),2321-2328.
MLA WANG, R,et al."EXPERIMENTAL AND THEORETICAL-STUDIES OF PRESSURE-DROP HYSTERESIS IN TRICKLE-BED REACTORS".CHEMICAL ENGINEERING SCIENCE 50.14(1995):2321-2328.
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